Summary: SUPPLEMENTARY MATERIAL
Plume fragmentation by bulk interactions in turbulent Rayleigh-B´enard convection
Johannes Bosbach1,2
, Stephan Weiss1
, and Guenter Ahlers1
1
Department of Physics, University of California, Santa Barbara, CA 93106, USA and
2
Institute of Aerodynamics and Flow Technology,
German Aerospace Center (DLR), G¨ottingen, 37073, Germany
(Dated: December 4, 2011)
ONSET OF TURBULENCE
At relatively small Ra, the shadowgraph images clearly
revealed the existence of convection patterns rather than
that of turbulent flows. This is shown by Fig. 1 a) and
b). Those patterns, even though disordered and time de-
pendent at the larger Ra, showed some remnants of regu-
larity in time and space. There were objects in the shad-
owgraph images that were indistinguishable from cold
plumes, but these corresponded to down-welling domain

Source: Ahlers, Guenter - Department of Physics, University of California at Santa Barbara

Collections: Physics